Plumas Co. Sagehen C. Field Station to Chilcoot, Calif. 4 Oct. Up. ca. 0630 and breakfast ca. 0700. We then went out to pick up our traps ca. 075. Weather clear, cold, frost on the ground. In our traps we found 1 Sorex palustris (JG4) along the stream at 1.9 mi W Sagehen, 1 Microtus montanus (DAG 245) at Kiln Meadow and 1 Peromyscus maniculatus (DAG 246) at 0.6 mi W Sagehen. We then returned to Sagehen + prepared our specimens, had lunch ca. 1230 or 1300 and left for Chilcoot ca. 1415. The route was as follows: N on 89 ca. 20 mi. to Sierraville, then E on Cal. 49 ca. 25 mi. to Vinton, then E on Cal. 70 ca. 2 mi. to Chilcoot, then N 1 mi. on Calif. 284. Then E ca. 1 mi on a dirt road into the desert. Here we waited around until ca. 1645 when Judy + I went out + set out 20 Sherman live traps in the scrub along a fence ca. 100 m. from the road. The traps were ca. 5 m. apart. We also set out 20 museum specials in the scrub and among a group of Jeffrey Pines, ca. 1800 Bob Seib, Licia Wolf + I went up to a rocky area on top of a hill ca. 1/2 mi from road & and set out 8 Victor rat traps and 4 tomahawk live traps. We then returned to the cars + drove ca. 1/2 mi down the road to our camping spot where we had supper. We went out to check the traps at 2030 and found 1 Peromyscus maniculatus in a Sherman (later released) and 1 P. maniculatus in a museum special (DAG 248). The traps set out in the rocks were not checked. We then returned to camp + sat around the fire until I went to bed ca. 2330.